Dual-band dual-mode textile antenna/rectenna for simultaneous wireless information and power transfer (SWIPT)

Wagih, M. , Hilton, G. S., Weddell, A. S. and Beeby, S. (2021) Dual-band dual-mode textile antenna/rectenna for simultaneous wireless information and power transfer (SWIPT). IEEE Transactions on Antennas and Propagation, 69(10), pp. 6322-6332. (doi: 10.1109/TAP.2021.3070230)

Abstract

This article presents a textile antenna for dual-band simultaneous wireless information and power transfer (SWIPT). The antenna operates as a 2.4 GHz off-body communications antenna and a sub-1 GHz (785–875 MHz) broad-beam rectenna. Incorporated within the broadside microstrip antenna is a high-impedance rectenna for sub-1 GHz power harvesting. Utilizing antenna-rectifier co-design, the rectenna eliminates the rectifier matching network. The textile antenna is fabricated on a felt substrate and utilizes conductive fabrics for the antenna. At 2.4 GHz, the antenna achieves a realized gain of 7.2 dBi on a body phantom and a minimum radiation efficiency of 63%, with and without the rectifier. The rectenna achieves a best-in-class RF to dc efficiency of 62% from 0.8 μW /cm 2 , representing over 25% improvement over state-of-the-art textile rectennas and demonstrating that SWIPT does not detrimentally affect the energy harvesting or communications performance. The antenna/rectenna occupies an electrically small area of 0.213×0.19λ20 . This antenna is the first dual-band, dual-mode antenna demonstrated on textiles for SWIPT applications and the first dual-band matching network-free SWIPT rectenna.

• Item Type: Articles
• Additional Information: This work was supported in part by the European Commission under the EnABLES Project funded through H2020-EU.1.4.1.2 under Grant 730957 and in part by the Engineering and Physical Sciences Research Council (EPSRC), U.K., under Grant EP/P010164/1.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Wagih, Dr Mahmoud
• Authors: Wagih, M., Hilton, G. S., Weddell, A. S., and Beeby, S.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: IEEE Transactions on Antennas and Propagation
• Publisher: IEEE
• ISSN: 0018-926X
• ISSN (Online): 1558-2221
• Published Online: 06 April 2021
• Copyright Holders: Copyright © 2021 IEEE
• First Published: First published in IEEE Transactions on Antennas and Propagation 69(10): 6322-6332
• Publisher Policy: Reproduced in accordance with the publisher copyright policy